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Apache XML Security for Java supports XML-Signature Syntax and Processing,
W3C Recommendation 12 February 2002, and XML Encryption Syntax and
Processing, W3C Recommendation 10 December 2002. As of version 1.4,
the library supports the standard Java API JSR-105: XML Digital Signature APIs.
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.xml.security.stax.impl.algorithms;
import org.apache.xml.security.algorithms.implementations.ECDSAUtils;
import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.utils.JavaUtils;
import java.io.IOException;
import java.security.*;
import java.security.spec.AlgorithmParameterSpec;
/**
* @author $Author: coheigea $
* @version $Revision: 1721033 $ $Date: 2015-12-20 15:09:20 +0000 (Sun, 20 Dec 2015) $
*/
public class PKISignatureAlgorithm implements SignatureAlgorithm {
private final String jceName;
private final Signature signature;
public PKISignatureAlgorithm(String jceName, String jceProvider) throws NoSuchProviderException, NoSuchAlgorithmException {
this.jceName = jceName;
if (jceProvider != null) {
signature = Signature.getInstance(this.jceName, jceProvider);
} else {
signature = Signature.getInstance(this.jceName);
}
}
@Override
public void engineUpdate(byte[] input) throws XMLSecurityException {
try {
signature.update(input);
} catch (SignatureException e) {
throw new XMLSecurityException(e);
}
}
@Override
public void engineUpdate(byte input) throws XMLSecurityException {
try {
signature.update(input);
} catch (SignatureException e) {
throw new XMLSecurityException(e);
}
}
@Override
public void engineUpdate(byte[] buf, int offset, int len) throws XMLSecurityException {
try {
signature.update(buf, offset, len);
} catch (SignatureException e) {
throw new XMLSecurityException(e);
}
}
@Override
public void engineInitSign(Key signingKey) throws XMLSecurityException {
try {
signature.initSign((PrivateKey) signingKey);
} catch (InvalidKeyException e) {
throw new XMLSecurityException(e);
}
}
@Override
public void engineInitSign(Key signingKey, SecureRandom secureRandom) throws XMLSecurityException {
try {
signature.initSign((PrivateKey) signingKey, secureRandom);
} catch (InvalidKeyException e) {
throw new XMLSecurityException(e);
}
}
@Override
public void engineInitSign(Key signingKey, AlgorithmParameterSpec algorithmParameterSpec) throws XMLSecurityException {
try {
signature.initSign((PrivateKey) signingKey);
} catch (InvalidKeyException e) {
throw new XMLSecurityException(e);
}
}
@Override
public byte[] engineSign() throws XMLSecurityException {
try {
byte[] jcebytes = signature.sign();
if (this.jceName.contains("ECDSA")) {
return ECDSAUtils.convertASN1toXMLDSIG(jcebytes);
} else if (this.jceName.contains("DSA")) {
return JavaUtils.convertDsaASN1toXMLDSIG(jcebytes, 20);
}
return jcebytes;
} catch (SignatureException e) {
throw new XMLSecurityException(e);
} catch (IOException e) {
throw new XMLSecurityException(e);
}
}
@Override
public void engineInitVerify(Key verificationKey) throws XMLSecurityException {
try {
signature.initVerify((PublicKey) verificationKey);
} catch (InvalidKeyException e) {
throw new XMLSecurityException(e);
}
}
@Override
public boolean engineVerify(byte[] signature) throws XMLSecurityException {
try {
byte[] jcebytes = signature;
if (this.jceName.contains("ECDSA")) {
jcebytes = ECDSAUtils.convertXMLDSIGtoASN1(jcebytes);
} else if (this.jceName.contains("DSA")) {
jcebytes = JavaUtils.convertDsaXMLDSIGtoASN1(jcebytes, 20);
}
return this.signature.verify(jcebytes);
} catch (SignatureException e) {
throw new XMLSecurityException(e);
} catch (IOException e) {
throw new XMLSecurityException(e);
}
}
@Override
public void engineSetParameter(AlgorithmParameterSpec params) throws XMLSecurityException {
try {
signature.setParameter(params);
} catch (InvalidAlgorithmParameterException e) {
throw new XMLSecurityException(e);
}
}
}